Six-wheeled logging-automobile.



PAT NTED MAR. 24, 1908.

N. P. OOPPBY. SIX WHEELED LOGGING AUTOMOBILE.

APPLIOATIOH FILED OUT. I 1997.

' 2 SHEETS-SHEET 1.

Cuban";

PATENTED MAR. 24, 1908.

N. P. 'OOFFEY. SIX WHEELBD LOGGING AUTOMOBILE.

APPLICATION FILED 0OT.1, 1907.

' 2 SHEETS-SHEET 2.

Snoemtoz flcmm s wit mu 4 ywwb, *2- W UNITED sfrnrns Pn ENT OFFICE.

NATHAN F. COFFEY, OF BLACK ROCK, ARKANSAS.

SIX-WHEELED LOGGING-AUTOMOBILE.

Specification of Letters Patent.

Patented March 24, 1908.

: Application filed October 1, 1907. Serial No. 395,362.

and useful Improvements in Six-Wheeled Logging-Automobiles;and I do hereby declare the following to be a full, clear, and ex- 'act'description of the invention, such as will enable others skilled in theart to which it appertains to make and use the same.

I My invention relates to a. six wheeled l0g- .glng automobile.

It has for its object to rovide a simple, in expensive and practice device for pulling logs from swamps,- and other laces inaccessible to horse or cattle teams, skidding or loading and. transporting them to mill or shipping point in localities where saw timber is not in sufficient quantities to justify the expense ofbuilding tramways and using derrick cars or cable systems.

Theinventloncomprises a four wheeled main truck and a two wheeled extension .cable runs, w

' the traction wheels. 7 Steerin truck detachably connected to said main truck. Shaft and gear connections from the driving motor or engine render it possible to employ-said motor power to' assist in steering the vehicle, and to pull the logs to and haul them upon said vehicle; The extension truck is provided with a reversible derrick post carrying pulleys over which the hauling ereby logs may be drawn or pulled from either side of the vehicle.

The invention also consists in the further featuresof construction and'combinations of parts hereinafterdescribed and specified in the claims.

In the accom' anying drawings, illustrating the preferrer embodiment of my "invention: Figure 1 is a plan view ofthe automobile, certain common and necessary parts such as the oil tank, brake, etc. being-omitted to permit the novel feature of the structure to be clearly illustrated. Fig. 2 is a side elevation,- and Fig. 3 is an enlarged sectional view-of the coupling between themain truck and the extension truck. v I

Referring more particularly to the drawings, 1 designates the frame of the main truck at the rear end of which are mounted wheels 3' are arranged at the front end of said frame; The main power shaft 4, which is driven by the motor 5, is eomiected by suitable gearing with. they two part counter shaft 6 carrying sprocket 12 of a short shaft 13.

pawl-26.

sprockets 7. Sprocket chains 8 passed also over sprockets S) on the wheels 2 serve to drive said wheels. One of-the sections of the shaft 6 carries a second sprocket 10 over which runs a sprocket chain 11 connected to Oppositely beveled and facing friction wheels 14 are carried by said shaft 13. The steering shaft 15 is provided with a beveled friction wheel 16. Either one 01 the friction wheels 14 may be brought into contact with said wheel 16 by operating the levers 17 whereby the motor poweris utilized to aid in turning the steering wheels. The main shaft is also geared u with-a capstan 18, the function of which wiil beliereinafter explained. Said main shaft is further provided with a friction clutch 19 controlled by-the lever 20 whereby the rear section of said shaft may be coupled with or uncoupled from the front section.

The extension'truck 21 comprises a reach bar 22 mounted on a pair of wheels 23 and having its front end hooked, as at 24. Said hooked end is adapted to be coupled witha socket piece/25 fitted with a gravitylocking By means'of lever 27 mounted on the axle of said pawlv the latter may be raised to release the reach bar when it is desired to disconnect the extension truck from the main truck. It will be noted that the shape of the hooked end of the reach bar, as

shown in Fig; 3 is such that if the extension truck should be turned over by any. cause, said hook will be disengaged from said socket piece thereby preventing the upsetting of the main truck as well. settingof the extension truck, the shank 24 on the hook 24 will engage the pawl 26 and throw it up out ofengagement with said hook as said shank turns in the socket piece 25 thereby disconnecting ,said extension .truck from the maintruck.

The derrick post 28 is hinged to the reach bar so that it may be turned to either side. A beam .29 secured to said post is adapted to be secured to the bolsters 30 and 81 by means of chains 32 and 33 in either position of the derrick post. Logs may be dragged to the vehicle and hauledup u on the rear or extension truck over the ski s 34 by means of a cable 35 one end of which is attached to a ring 36 on the reach bar near the baseof the derrickpost. Saidcableis assed around the log, as shown, and back through pulley 37 on'the upper end of the derrick post, thence through pulley 38 at the base of said In the event of the uppost and over pulley 39 on the main truck frame to the capstan around which it is passed several times, the other end extendin out at the side of the Vehicle where it is he (:1 and handled by the operator.

i/Vhen heavy strain is to be placed on the cable, the tractionwheels and the Wheels on the extension truck may be run upon planks 40 and blocked and braced as at 41 and 42 respectively. It will be noted that the use of t e extension truck permits the handling of logs andother articles which would be dangerous or impractical on a four wheeled vehicle already encumbered-with an engine and other machinery. Said extension truck is preferable to a separate four Wheeled truck used as a trailer because it is more Wieldy and more easily handled and the additional weight of one end of each of the logs upon the traction wheels is necessary to secure adhesion to the The'ca stan and pulling arrangement may be user to pull loaded vehicles out of mud holes or over obstriiotions when the regular propelling power is inadequate.

While'the invention is intended primarily for a logging vehicle, it is of value to handle and haul'heavy freight of other descriptions, or a passenger coach of large capacity. Also, the motor and connections can be used for various o her purposes such as are usually accomplished-by ordinary portable engines.

I claim:

i 1. The combination, with a main truck, of a two-wheeled extension truck connected to said main truck, a derrick post on said extension truck, a capstan on said main truck, and a cable extending from said capstan over pulleys on said derrick post for the purpose specified.

2. The combinatiognjwith a main truck, of 1 a two-wheeled extension truck connected to said main truck, a derrick post hinged to said extension truck and adapted to be inclined towards' 'ither side of the vehicle, means to retain said post in'either position, a capstan ground and prevent slipping.

on said main truck, and a cable extending "post hinged to said reach bar and adapted to be inclined towards either side of the vehicle, a beam secured to said post, bolsters on said main and auxiliary truck, means to secure the ends of said beams to said bolsters in either position of-said post, a capstan on the main truck and a cable extendin from said capstan over pulleys on said post or the purpose specified.

4. The combination, with a motor driven main truck, of a two-wheeled extension truck connected to said main truck, a derrick post on said extension truck, a capstan on said main truck and geared up .with the driving motor, and a cable extending from saidcapstan over pulleys on said derrick post for the purpose specified. v

5. The combination, with a motor driven main truck, of a two-wheeled extension truck connected to said main truck, an auxiliary shaft on said main truck having driving connection with the motor shaft, two facing beveled friction ,wheelson said auxiliary shaft, a

beveled friction Wheel on the steering shaft and arranged between said wheels on said auxiliary shaft, means to move either of said latter wheels into contact with the wheel onthe steering shaft for the' pnrpose specified, a derrick post on said extension truck, a capstanon said main truck and geared up with the motor shaft, and a cable extending from said capstan over pulleys on said derrick post for the purpose specified.

In testimony whereof, I affix my signature, in presence of two witnesses.

NATHAN F. "COFFEY. Witnesses J. W. DAVIS, W. A. CAMPBELL. 

